/*
 * Expr.scala
 */

package acorn.jash

import acorn.jash.io.{stdin,stdout}
  
abstract class Expr {

  var args:List[String] = Nil
  
  var in:Input = null//stdin

  var out:Output = stdout

  var err:Output = stdout

  def eval:Int

  final def throwJE(msg:String) = throw new JashException(msg)
}
